Oil-burner.



Ptented Nov. 19, 1918.

3 SHEETS-SHEEI 2.

WHTNBS SES. IINVIENTUH.

` BY MLLMM i?. Ema

ATTORNEYS;

W. R. RAY. OIL BURNER.

APPLICATION FILED MAY B I9I6.

Patented Nov. 19, 1918.

3 SHEETS-SHEET 3.

INVENTOR WILLIAM HAY WITNESSES:

ATrDRNEY WILLIAM R. MY, OF 4SAN FRANCISCO, CALIFRNI.

orrprrumma.

Lasaare.

Specification of Letters Patent.

applicati@ met Maya, 191e. serial No. 96,108.

To all whom 'it may concern:

Be it known that I, WHJLIAM R. RAY, a citizen of the United States, residing in the city and county of San Francisco and State 5 of California, have invented new and useful Improvements in Oil-Burners, of which theI .following is a. specification.

This invention relates to`oil burners and pertains especially to rotary burners of. the Atype shown and described in my Patent No.

The object of this invention is to provide a burner having a rotary atomizer and fan., both of special construction, mounted directly on the motor shaft, the whole supported upon a swinging plate forming a part of the fan casing to allow the burner to be swung outwardly for inspection, or inwardly against the furnace front so that the burner tip may project within the combustion chamber; the fan casing and burner being mounted entirely distinct from the ordinary furnace door.

The resent invention has to do particularly with the construction, arrangement and mounting of the burner and its operating parts, as `will hereinafter be more fully described, having reference to the accompanying specifications and drawings in which- Figure l is a side elevation of a burner partly in section, showing its application to a furnace.

` Fig. 2 is a front view of same.

Fig. 3 is a plan View. v f Referring to the drawings in detail, A Aindicates the front end cfr/an ordinary furnace and 2, the opening which is generally closed by the furnace door. Suitably secured to the furnace front is a plate 3 vprovided with a conical extension -it which projectsy into the opening 2 to form a metallic lining for same. Formed integral with the plate 3 or otherwise secured to same, is a pair of hinge. lugs 5, which are provided for the purpose of supporting a fan casing gener ally indicated at B. rllhis casingconsistsof a housing 6 and a front cover 7 secured thereto by means of screws 8.r Formed integral with the housing 6 is a pair of hinge lugs t which coperate with the lugs 5 to form a hinge, abouty which the fan casing B, as a whole, maybe swung. Mounted upon an extension bracket 10, secured to the fan casing cover 7, is an electric motor 11. The motor i here shown is provided withaJ hollow shaft 12, one end of which is suiciently extended to. form a support for a fan 13 and an atomizing cup 14:. The cover section 7 is provided with an air intake opening 15 and the housing 6 with a discharge chamber 16,

.which is extended by securing to the housing 6 a tapered nozzle 17, which is sufliciently lon to inclose the yatomizing cup :14 and to orm, in conjunction therewith,

an annular discharge passage for the air discharging from the fan. Secured interiorly of the nozzle is a lurality of guide vanes 17a. Secured interiorly of the housing 6 is a circular plate 18 of lesser diameter'which divides the interior of the housing into two compartments, 19 and 20. rIhe compartment 19 contains the fan 13 while t-he compartment 20 serves as an air passage, which receives the air discharging from the periph- Very of the fan andvthen deflects it down to Lthe central discharge chamber 16 andconnected nozzle 17.

llhe guide vanes l17at divide the annular discharge passage which is inclosed between the top end of the nozzle 17 and the atomizing cup 14 into a series of longitudinal channels for the discharging air. rllhese vanes 17a are carried by the nozzle 17 and move in and out `of the conical plate l when the burner is turned on its hinges. These guide vanes 17a are quite -important in practical operation since it was found in practice that the fanV by setting the volume of air in swirling motion and the .further acceleration of the swirl in chamber 16 by the rotating shaft 12 resulted in serious in- Patented New@ 1Q?, 191%,

terference with the flame from the burner until vanes were employed; the vanes 17 a being stationary with relation to the rotating shaft and cup operate to direct the otherwise swirling volume of air in the burner in straight lines outside the burner so as to bring about a complete atomization of the oil and insure a straight shot flame. As here shown the fan and fan casing are of relatively large diameter with respect to theirto the nozzle shaft 12 of the motor is a stationary pipe 21 which opens into the atomizing cup 14 at one end and is connected at the opposite end with a controlling valve The oil is delivered to the valve 22 and t-he connected stationary pipe 21 by means of a pump 23 of suitable construction, which is driven directly from the motor` shaft at a reduced speed by means of the worm gear drive indicated at 21a. Extending through the hinge lugs 5 land 9 are hollow pintle members 21 and 25, the inner ends of which are collnected with a centrally divided double T fitting indicated at 26. Oil from any suitable source of supply enters the lower half of the double 'l' through a pipe 27 and then passes down through the hollow pintle 25 which is connected with the pump 23 by means of a pipe 28. The oil impelled by the pump is then discharged through a pipe 29 which enters an angle T indicated at 30. The major part of the oil ishere directed through a pipe 31 to the valve 22 with connected stationary pipe 21 which finally delivers the oil to the atomizing cup 1l, while any surplus' amount delivered by the pump is by-passed through pipe 32 which connects with the upper hollow pintle 21, which as before stated, connects with the upper `side of the double T 26. 1t then passes out through the pipe 33 ,which connects with the source of supply andtherefore serves as a return or over-How for any surplus amount of oil delivered by the pump 23. The atomizing cup 11 and the fan 13 are lsecured upon the motor shaft 12 and will therefore turn in unison with same.

In operation it will only be necessary to close a switch, not here shown, to startl the motor. This, when started, will turn the fan 19 and connected atomizing cup 11 with sufficient speed and velocity to cause the desired volume of air to discharge through the nozzle 17. Oil delivered to the cup 1l will simultaneously be projected in the form of a thinspray by means of the centrifugal action and as this spray meets the outwardly discharging annular column of air froln the nozzle 17v` a further atomizing effect .will take place, causing a combined mixture of oil vapor and air to discharge in a forward direction into the furnace where it is ignited in any suitable manner.

The delivery of oil to the cup is automatically attended to as the pump 23 is directly connected with the motor and will therefore start the flow of-oil to the cup the moment the motor begins to operate. AThe volume of oil delivered being .regulated by means of thevalve 22 while an `surplus amount .will over-flow and return to the 1 source of supply through pipes 32 and 33. The whole burner unity constructedv and mounted as here shown` makes a compact practical unit supported upon hinges; these permit the burner, as a whole, to be swung outwardly for inspection or inwardly against the furnace front so that the burner tip, that is, the atomizing cup 11, with surrounding nozzle 17, may project within the combustion chamber; the burner as a whole, being locked against movement in this position by means o f a turning latch 10. An ordinary furnace door is in this manner entirely ob* viated as the fan housing indicated at 6 will form a closure for the furnace opening The provision of the hollow pintles 2l and 25 is also an important feature of the present invention as it permits the burner, as a whole, to be swung into and out of the furnace opening without disturbing the oil supply or overflow connections or any of the valves controlling or regulating the flow of the oil.

A decided advantage gained by hinging the burner structure, as a whole.- to the front plate of the furnace is obtained for the following reason: After the burner has been firing a furnace, it must be remembered that the brick lining absorbs a great portion of theheat and becomes glowing red. This heat glows and reflects back upon the centrifugal atomizing cup, after the oil and air is turned off, and would cause it to become so hot as to anneal or warp unless removed from the furnace opening, and Iwould also cause any remaining oil in the atomizing cup to become carbonized and hardened. Previous to the provision of the hinged structure here shown, applicant found it necessary to keep the motor and fan running for at least fifteen minutes after the oil was turned off for the purpose of cooling down the furnace to such an eX- tent that the stored heat would not warp or destroy the atomizer. This difficulty has, however,` been overcome by the present structure as the burner as a whole, may be swung about the, hinges to assume a position exterior of the'furnace where it is not affected by the furnace heat. The furnace may in this manner, retain its heat for a considerable time and the boiler or other device heated by the furnace is similarly prevented from cooling down too rapidly.

The hollow motor shaft construction, together .with the oil-delivering pipe 21 passing therethrough and the adjusting mechanism employed in connection with the said pipe are shown, described and claimed in my copending. application Serial Number 96,107. y

Having thus described my invention. what I claim and ldesire to secure by Letters Patent is- 1. In an oil burning apparatus. the combination of a furnace plate adapted to be attached to a furnace front and carrying a tubular extension adapted to protrude through aan opening in the furnace wall to form a metallic lining therefor; and a fan blower casing hinged to the plate, said fan blower casing carrying an oil distributing v""cl'ipwhich `projects through the said tubular projection to discharge into the furnace lwhen the fan blower casing is closed over the plate. j

2. In an oil burning apparatus, the combination of a furnace plate adapted to be attached to a furnace front and carrying a tubular extension adapted to protrude through an opening in the furnace wallto form a metallic lining` therefor, and afan blower casing hinged to the plate and carrying an oil distributing cup which projects through and is housed by the said tubular' projection to `discharge into the furnace when the fan blower casing is closed over the plate, apost on the furnace plate eX- t'ending out alongside the casing, and a keeper pivoted on the post for swinging over the casing to hold it in closedposition;

3. ln an oil burning apparatus the combination with a furnace plate adapted to be attached t0 a furnacey front and having an opening formed therein registering with the furnace opening, `of a fan casing adapted to form a closure for the furnace front opening, hinges connecting the fan casing with the furnace plate to permit the casing to be swung to and away from the furnace front opening, an air nozzle on the fan casing adapted to project into the furnace opening, a motor carried by the fan' casing, a motor Shaft extending through the motor, the casing, and into the air nozzle, a fan secured on the shaft within the casing, a fuel atomizing cap secured on the shaft within the air nozzle, and connections formed through the hinges to deliver fuel oil to the atomizing' cup.

4:. Inan oil burningapparatus the combination of a furnace plate adapted to be attached to a furnace front and carrying a tubular extension adapted to protrude through an opening in the vfurnace wall to form a metallic lining therefor, a pair of hinge lugs mounted on said plate; a fan casing adapted to form a closure for the furnace front opening; a pair of hinge lugs on the fan casing coperating with the first= named hinge lugs to permit the fan casing to be swung to, and away from, the furnace front opening; an air nozzle secured on the fan casing, adapted to project through the furnace opening, a fuel atomizing cup mounted on said nozzle, an electric motor carried by the fan casing direct connected to afan mounted in the casing and the atomizing cup, a hollow pintle projecting Athrough one of the cope ating hinge lugs,

an oil delivering pipe connected at one end with said hollow pintle and at the opposite end with a source of fuel supply, a controlling valve, a pipe connecting the valve with the .hollow pintle and a second pipe connected with the valve adapted to deliver oilto theatomizer.

5. In an oil burning apparatus the combination of a furnace plate adapted to be 7o attached to a furnace front and carrying a tubular extension adapted to` protrude through an opening in the furnace wall to form a metallic lining therefor,la pair of hinge lugs mounted 'on' said plate; a fan 75 casing adapted to form a closure for the furnace front opening; a pair of hinge lugs on the fan casing coperating with the firstnamed hinge lugs to permit the fan casing to be swung to, and away from,`the furnace front opening; an air nozzle secured on the fan casing, adapted to project through the furnace opening, a fuel atomizing cup` 1, mounted in said nozzle, an electric motor carried by the fanv'casing direct lconnected to a fan mounted in the casing and the atOmiZing cup; a pair of hollow pintles projecting through thecooperating hinge lugs, anl oil delivering pipe connected at one end with one of said hollow pintles and at the oppositeend with a source of fuel supply, a controlling valve, a pipe connecting the valve with the last named hollow v pintle, a second pipe connected with the valve adapted to deliver oil to the atomizer,

an overflow pipe interposed between the valve and the first named hollow pintle connected with theJ other hollow pintle and a -pipe connecting said pintle with the source of fuel supply to form an over-flow. 10c 6. In an oil burning apparatus, the com-A bination of a furnace plate adapted `to be attached to a furnace front and carrying a tubular extension adapted to protrude through an opening in the furnace wall to form a metallic lining therefor, a pair of hinge lugs mounted on said plate; a fan casing adapted to form a closure for the furnace front opening; a pair of hinge lugs f on the fan casing cooperating with the first- 11o named hinge lugs to permit the fan casing to be swung to, and away from, the furnace front openlng; an air nozzle secured on the fan casing, adapted to project through the furnace opening, a fuel atomizing cup M5 mounted in said nozzle within the furnace 7plate extension, a fan in the casing, an electric motor carried bythe fan casing directly connected to a fan andY the atomizing cup,

and means for delivering fuel'to the atom- 12o 7. In an oil burning apparatus, the combination of av hollow shaft, an atomizing cup secured on one end of the shaft, afan secured to the shaft, a fan casing arranged around the fan havin-g an intake opening formed on one side and a discharge opening on the op-posite side; a nozzle; connected with the discharge opening, a plurality of longitudinally disposed vanes arranged in the we nozzle around the atomizing cup, and a` stationary pipe projecting through the hollow ing formed therein, of a furnace plate adapted to be attached to the furnace front and` having a projection formed thereon, adapted to form a lining for the furnace opening` a pair of hinge lugs carried by thel furnace front plate. a fan casing adapted to form a closure for the furnace front opening, a pair of hinge lugs on the fan casing adapted to coperate with the furnace plate lugs to form a hinge about which the fan casing may be swung to, or away from, the furnace opening: an electric motor carried by the fan casing, having a hollow shaft, one end of which is extended, a fan secured to the shaft and positioned within the fan casing, an atomizing cup secured on the shaft exterior of the fan casing, a nozzle connected with a discharge opening formed on the fan cas. ing projecting through the lined furnace ',opening and also surrounding the atomizing cup; a hollow pintle extending through one pair of the hinge lugs and means for delivering oil through said pintle to supply the atomizing cup. y

9. A centrifugal oil burner comprising in combination, a hollow motor 'shaft through which oil is delivered, a distributing cup on the shaft and in axial line with the shaft and into which the oil fuel supplied through the shaft. is delivered, a nozzle member sur- Aroundlng and spaced from the distributmg cup to provide an air conduit around the cup, dlrection vanes between the cup and nozzle 1n the air condult, a fan on the motor shaft having a casing which forms with the nozzle, an air passageway in communication with said air conduit and a motor mounted `directly on the motor shaft.

10. A centrifugal oil burner comprising in combination, a hollow motor shaft through which oil is delivered, a distributing cup on the shaft and inv axial line with the shaft .the shaft, is delivered, a nozzle member surrounding and spaced from the distributing cup to provide an air conduit around the cup. direction vanes between `the cup and, nozzle in the air conduit, a fan on the motor shaft having a casing which forms with the nozzle, an air passageway in communication with said air conduit and a motor mounted directly on the motor shaft, said fan casing being hingedly mounted and said motor shaft having oil connections through said hinges.

l1. In a centrifugal oil burner the combination of a motor and motor shaft, a fan mounted on the shaft which is of relatively large diameter with respect to its width, a

fan casing, said casing having on one side a tapered forwardly extending nozzle which is in axial line with and surrounds and is spaced from said shaft, said casing having a diaphragm between the fan and said nozzle and around which the air travels in a relatively thin sheet to the nozzle, an oil distributing cup on the end of the shaft within the nozzle` means to deliver oil to the cup, said nozzle having adjacent to its outer end a series of guide vanes with their inner edges adjacent to the periphery of the cup, said vanes dividing the space between `the nozzle l and cup into a series of longitudinal channels through which theJ air isI directed in substantially straight lines.

12. In a centrifugal burner the combination of a fan and fan casing, a fan shaft, a motor for the same, the fancasing having a tapered nozzle pnojectingcentrally fromy one side of the casing and surrounding and spaced from the fan shaft, an oil atomizer on the end of the fan shaft, said nozzle having at its tip end a series of longitudinally extending vanes closely surrounding the atomizerand stationary with respect thereto and adapted to direct the swirling currents from the fan in straight lines around the atomizer.

13. In a centrifugal Yburner the com'bination of a fan and fan casing, a fan shaft, a motor for the same, the fan casinghaving a, tapered nozzle projecting centrally from one side of the casing and surrounding and spaced from the fan shaft,-an oil atomizer 0n the end of the fan shaft` said nozzle having at its tip end a series of longitudinally extending vanes closelyv surrounding the atomizer and stationary with respect thereto and adapted to direct the swirling currents from the fan in straight lines around the atomizer, said vanes being mounted on and carriedby they nozzle. a furnace plate with a conical projection to fit a furnace opening and being substantially co-extensive in length with the nozzle and atomizer, said fan casing being. hinged to said furnace plate and turnable to withdraw the nozzle, atomizer and vanes bodily from the cavity inc-losed 'by said conical extension of the furnace plate.

ll. The ing an opening formed therein, of an oil burner, spaced hinges mounting the burner so as to be swung to and away from the furnace opening, and oil conducting means for delivering fue-l oil to and returning surplus oil from the buner, said means including a rigid structure extending through both the hinges and provided with oil passages.

15. In an oil burning apparatus, the combination with a 'furnace' plate adapted to be attached to a furnace front and having an inwardly tapering extension registering withthe furnace opening, of a casing hingedly combination witha furnace havmaaar@ nections for delivering fuel oil to the,

burner.

16. In an oil burning apparatus the combination with a furnace plate adapted to be attached to a furnace front and having an inwardly projecting tubular extension registering with the furnace opening, a fan casing adapted to form a closure for the furnace front opening,lhinges connecting the fan casing with the furnace plate to permit v-the casing to be swung to and away from the furnace front opening, .an air nozzle on the fan casing housed by the plate extension and adapted to project intothe. furnace opening, a motor carried by the fan casing, a motor shaft extending through the v motor, the casing, and into the air nozzle, a

fan secured on the shaft within the casing, a fuel atomizing cup secured on the shaft Witln Y the air nozzle, and connections formed through the hinges to deliver fuel oil to the atomizing cup. 17. The combination with a furnace having an opening formed therein, a pair of hinge lugs on the furnace, an oil burner, and means for supplying oil tothe burner pivvotally connecting the latter to the hinge lugs, said means comprising an oil-supplying conduit passing through one hinge lug and a return conduit passing through the other hinge lug and connected to the rst conduit between the hinge lugs.

18. The combination with a furnace having an opening formed therein, a pair of hinge lugs on the furnace, an oil burner, of means for supplying oil to the burner pivotally connecting thelatter to the hinge lugs, said means comprising an oil-supplying conduit passing through one hinge lug and a return conduit passing through the other hinge lug, and a pump arranged in the supply conduit for forcing the oil through the conduits and to the burner.

19. The combination of a furnace having v an o eninO' formed therein a air of hinge lugs on the furnace, an oil burner, means for supplying oil to the burner pivotally connecting the latter to the hinge lugs, said means comprising an oil-supplying conduit passing through one hinge lug and a return conduit passing through the other hinge lug, and a double T-connection arranged between the hinge lugs and having separate passages connected to the respective conduits.

20. The combination with a lfurnace having an opening formed therein, a pair of hinge lugs on the furnace, an oil burner, means for supplying oil to the burner pivotally connecting the latter to the hinge lugs, said means comprising an oil-supplying conduit passing through one hinge lugI and a return conduit passing through the other hinge lug, a motor, a fan driven by the motor for delivering air to the burner, and al pump -arranged in the conduits and driven by the motor.

In testimony whereof I have hereunto setr my hand in the presence of two subscribing witnesses.

WILLIAM R. RAY. Witnesses:

W. W. HEALEY, M. E. EWING. 

